Answer:
(Fatwa: 981/841/B=1432)
(1) Yes, he may offer.
(2) If the dew perfume contains any alcohol prepared by wine then offering salah shall not be lawful after applying it.
(3) Yes, it is mustahab to recite Bismillah in salah before each Surah.
(4) After the Azan of khutba one should not read Dua-e-Azan rather he should sit quite. One should do important duas in his heart between the two khutbas for himself or for his family. It is a time in which dua is accepted.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
